ATMEGA328P-ANR vs ATMEGA168PA-AU Comparison
Detailed side-by-side comparison of ATMEGA328P-ANR by Microchip Technology and ATMEGA168PA-AU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA328P-ANR - 8-Bit 20MHz AVR MCU 32KB Flash | Microchip (Tape & Reel)
ATMEGA328P-ANR ✓ ActiveMicrochip Technology
ATMEGA168PA-AU - 8-bit AVR MCU 20MHz 16KB Flash TQFP-32 | Microchip
ATMEGA168PA-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-ANR | ATMEGA168PA-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Product Type | 8-bit AVR RISC-based microcontroller | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 32 KB (16K × 16) | 16 KB (8K x 16) |
| SRAM | 2 KB | 1 KB |
| EEPROM | 1 KB | 512 B |
| General-Purpose I/O Lines | 23 | — |
| General-Purpose Working Registers | 32 | — |
| Timer/Counter Count | 3 | — |
| Timer/Counter Features | Compare modes | — |
| Serial Communication | USART | — |
| Two-Wire Interface | Byte-oriented | — |
| Interrupt Support | Internal and external interrupts | — |
| Operating Temperature | 105°C | -40C to +85C |
| Package | 32-TQFP (7 mm × 7 mm) | 32-TQFP (7x7 mm) |
| Mounting Type | Surface mount | Surface Mount |
| Programming | In-system programmable ISP Flash | — |
| Flash Read-While-Write | Supported | — |
| Core Architecture | AVR 8-bit RISC | AVR RISC |
| Pricing Reference | LCSC price from $3.3765 as of 2026-10-21 | — |
| Core Size | — | 8-bit |
| Number of I/O Lines | — | 23 |
| ADC Resolution | — | 10-bit |
| ADC Channels | — | 6 (8 in TQFP: ADC6/ADC7) |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| Timers/Counters | — | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Low Power Technology | — | picoPower |
| In-System Programming | — | Yes (ISP, read-while-write) |
| RoHS Status | — | Compliant |